Lamp for a bicycle



FIG. 1 is a front elevational view of a lamp for a bicycle showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a side elevational view thereof, the opposite side being a mirror image;

FIG. 6 is a longitudinal cross sectional view thereof; and

FIG. 7 is a front perspective view thereof. 

The ornamental design for a lamp for a bicycle, as shown and described. 